I agree with this, and don't think anyone is asking for the owner to be at every game. You would expect some degree of curiosity at the very least, given that this was a transaction worth over £500 million. Just to get an experience of the club with your own eyes and ears and not through TV or Teams meetings with the executives.
It's not a huge deal either way but it is symbolic to a degree. The last game at Goodison and the first at Everton stadium are huge, monumental events in the clubs history, and I'd just expect the owner to make time to attend at least one of them. It's a statement that this matters, that it's important, in the same way people show up for things all the time.
I just have a hunch that he'll attend the first game at Everton stadium but not at Goodison. That's fine, and I would get that. For him, that would be the "new" Everton under his ownership and not the "old" mediocre and struggling Everton. But he should show his face wherever it is, sooner or later.